Gurupurnima is the day to express gratitude for your Guru. Osho says guru is made of “Gu” and “Ru”. Where Gu stands for darkness and Ru stands who dispels the darkness. So Guru is the Light who takes away all your darkness. No language can translate this word it is so intrinsically eastern. Osho says that “Guru choose his disciple”. The calling is from Guru. So all those who got the calling from their Guru are fortunate ones.